Hyundai Santa Fe (2006 year). Manual — part 451
FL -414
FUEL SYSTEM
DTC P1172 MAXIMUM RAIL PRESSURE EXCEEDED
COMPONENT LOCATION
EDBFC90B
Refer to DTC P1171.
GENERAL DESCRIPTION
E6C5B1E8
Refer to DTC P1171.
DTC DESCRIPTION
ED4E77F8
Rail pressure is controlled by 1)only RPRV or 2)both RPRV and FPRV or 3)only RPRV depending on engine condition.
These three modes are called ’CPC mode’. During transition from one mode to another mode, if rail pressure is above
the maximum rail pressure for each certain engine condition for more than 240ms. P1172 is set then, rail pressure is
controlled by RPRV alone.
DTC DETECTING CONDITION
ED2B0C07
Item
Detecting Condition
Possible Cause
DTC
Strategy
• Signal monitoring
Enable
Condi-
tions
• Engine running
Thresh-
old
Value
• If rail pressure is above the maximum rail pressure for each
certain engine condition
Diag-
nostic
Time
• 0.24 sec.
Fuel cut
NO
EGR Off
NO
Fuel Limit
NO
Fail Safe
Check Lamp
NO
• Rail press. is
controlled by
RPRV
• ECM internal
error
• RPRV
component
• FPRV
component
• RPS
componet
MONITOR SCANTOOL DATA
EDEB0A0E
Refer to DTC P1171.
VERIFICATION OF VEHICLE REPAIR
E745FE2D
Refer to DTC P1171.
DTC TROUBLESHOOTING PROCEDURES
FL -415
DTC P1173 IMPROPER MOTER VOLTAGE-ETS (GASOLINE) / SET VALUE
OF RAIL PRESSURE NOT IN PLAUSIBILITY RANGE (DIESEL)
COMPONENT LOCATION
EA44DDC9
Refer to DTC P1171.
GENERAL DESCRIPTION
E81E91F5
Refer to DTC P1171.
DTC DESCRIPTION
E11D3DB1
When too many correction signals are loaded to PCV, PCV fails to be controlled and its governing voltage is fixed to certain
value. If this condition lasts for more than 5 sec. P1173 is set then, rail pressure is controlled by FPRV alone.
DTC DETECTING CONDITION
E6082719
Item
Detecting Condition
Possible Cause
DTC Strategy
• Signal monitoring
Enable Conditions
• Engine running
Threshold Value
• PCV fails to be controlled and its governing
voltage is fixed to certain value
Diagnostic Time
• 5 sec.
Fuel cut
NO
EGR Off
NO
Fuel Limit
NO
Fail Safe
Check
Lamp
NO
• Rail press. is controlled
by FPRV
• ECM internal error
• RPRV component
• FPRV component
• RPS componet
MONITOR SCANTOOL DATA
E4EF877B
Refer to DTC P1171.
VERIFICATION OF VEHICLE REPAIR
EA43A592
Refer to DTC P1171.
FL -416
FUEL SYSTEM
DTC P1185 FUEL PRESSURE MONITORING-MAXIMUM PRESSURE
EXCEEDED
COMPONENT LOCATION
E4ADC0C3
Fuel Pressure
Regulator Valve
FTS
Rail Pressure Regulator Valve
RPS
LFIG476A
GENERAL DESCRIPTION
E83AD4C5
As inputted rail pressure sensor signal, ECM of Commom rail diesel engine controls fuel metering unit(MPROP-intergrated
with high press. pump) and rail pressure control valve(PCV-integrated with common rail) in order to maintain optimum rail
pressure according to current engine rpm and load. However when the problem that leads rail pressure to out of target
value intended by ECM occurs due to mechanical or electronical reason, ECM limits engine performance and sets DTC by
limiting fuel (stops injector operation) in order to prevent engine from being controlled abnormally. "rail pressure monitoring
error" is the DTC which diagnose 1).supplying state of low pressure fuel and 2).mechanical operating conditions of high
pressure pump and 3). RPCV indirectly based on RPS output voltage and RPS duty. thus, repair relavant to this DTC
requires mechanics the total understand of fuel system.
DTC DESCRIPTION
EF4165F7
P1185 is set when 1)rail press. is higher than target rail press. by 150bar in condition that rail press. is controlled by fuel
metering unit(MPROP) or 2)rail press. exceeds maximum limiting value. This code is due to 1)more than intended fuel
supply to common rail or 2)poor return of fuel supplied to common rail or 3)short to high voltage line in fuel press. sensor.
DTC TROUBLESHOOTING PROCEDURES
FL -417
DTC DETECTING CONDITION
E129418D
Item
Detecting Condition
Possible Cause
DTC Strategy
• Voltage monitoring
Enable Conditions
• Engine running
Threshold Value
• (Case1) Rail pressure is above maximum
limiting value(1750bar) at fuel pressure regulator
valve(MPROP) operating condition. - 0.24 sec.
• (Case2) Actual rail press. is above the maximum
posible rail press. at certain temp. at fuel
pressure regulator valve(MPROP) operating
condition. - 0.8 sec.
• (Case3) Rail pressure is above target rail pressure
by more than 150bar at fuel pressure regulator
valve(MPROP) operating condition.- 0.75 sec.
Diagnostic Time
• Refer to threshold Value
Fuel cut
NO
EGR Off
NO
Fuel Limit
Case1,2:
YES
Case 3:
NO
Fail Safe
Check
Lamp
Case1,2:
YES
Case 3:
NO
• Fuel pressure regulator
valve(open stuck)
• Rail pressure regulator
valve(close stuck)
• Rail pressure sensor(Output
fixed at high voltage line)
MONITOR SCANTOOL DATA
EE9D7AAD
1.
Monitoring rail pressure data
1)
Connect Scantool to Data Link Connector (DLC).
2)
Warm engine up to normal operating temperature.
3)
Turn "OFF" electrical devices and A/C.
4)
Monitor "FUEL PRESSURE MEASURED", "FUEL PRESS. S/POINT", "RAIL PRESS. REGULATOR1", "INJ.
PUMP REGULATOR" parameter on the Scantool.
Specification : FUEL PRESSURE MEASURED similar to "FUEL PRESS. S/POINT"
FUEL PRESS. S/POINT : 27 ± 5 Mpa
RAIL PRESS. REGULATOR1 : 16 ± 3%
INJ. PUMP REGULATOR : 34 ± 3%
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